Question

What is the colour of gram -postive bacteria on a gram staining?

Answer 1

purple is the colour of gram- positive
thank you

Answer 2

gram positive bacteria have a thick mesh like cell wall made of peptidoglycan and as a result are stained purple by crystal violet,whereas gram- negative bacteria have a thinner layer ,so do not retain the purple stain and are counter- stained pink by safranin.